: output_function_prologue (FILE, SIZE, leaf_function))
\f
/* Output assembler code to FILE to increment profiler label # LABELNO
- for profiling a function entry. */
+ for profiling a function entry.
+
+ 32 bit sparc uses %g2 as the STATIC_CHAIN_REGNUM which gets clobbered
+ during profiling so we need to save/restore it around the call to mcount.
+ We're guaranteed that a save has just been done, and we use the space
+ allocated for intreg/fpreg value passing. */
#define FUNCTION_PROFILER(FILE, LABELNO) \
do { \
+ if (! TARGET_ARCH64) \
+ fputs ("\tst %g2,[%fp-4]\n", FILE); \
fputs ("\tsethi %hi(", (FILE)); \
ASM_OUTPUT_INTERNAL_LABELREF (FILE, "LP", LABELNO); \
fputs ("),%o0\n", (FILE)); \
fputs ("\tcall mcount\n\tadd %lo(", (FILE)); \
ASM_OUTPUT_INTERNAL_LABELREF (FILE, "LP", LABELNO); \
fputs ("),%o0,%o0\n", (FILE)); \
+ if (! TARGET_ARCH64) \
+ fputs ("\tld [%fp-4],%g2\n", FILE); \
} while (0)
-
/* There are three profiling modes for basic blocks available.
The modes are selected at compile time by using the options
-a or -ax of the gnu compiler.